Rotating spiral waves in a nonlinear optical system with spatial interactions

✍ Scribed by N.I. Zheleznykh; M. Le Berre; E. Ressayre; A. Tallet

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 627 KB
• Volume: 4
• Category: Article
• ISSN: 0960-0779
• DOI: 10.1016/0960-0779(94)90106-6

✦ Synopsis

The formation of multi-petals and multi-spirals is analysed with the help of a generalized dispersion relation, taking advantage of the invariance of the rotation frequency of a pattern. It results in an eigenvalue problem, which allows us to predict the rotation frequency and the radial curvature of the pattern, in good agreement with exact calculations: A stationary pattern is predicted to look like petals, while a uniform rotating pattern is predicted to have some curvature, leading to a spiral shape.